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<title>killpg</title>
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<basefont size="3"> <a name="killpg"></a> <a name="tag_03_324"></a><!-- killpg -->
<!--header start-->
<center><font size="2">The Open Group Base Specifications Issue 6<br>
IEEE Std 1003.1-2001<br>
Copyright &copy; 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
<!--header end-->
<hr size="2" noshade>
<h4><a name="tag_03_324_01"></a>NAME</h4>
<blockquote>killpg - send a signal to a process group</blockquote>
<h4><a name="tag_03_324_02"></a>SYNOPSIS</h4>
<blockquote class="synopsis">
<div class="box"><code><tt><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt=
"[Option Start]" border="0"> #include &lt;<a href="../basedefs/signal.h.html">signal.h</a>&gt;<br>
<br>
int killpg(pid_t</tt> <i>pgrp</i><tt>, int</tt> <i>sig</i><tt>); <img src="../images/opt-end.gif" alt="[Option End]" border=
"0"></tt></code></div>
<tt><br>
</tt></blockquote>
<h4><a name="tag_03_324_03"></a>DESCRIPTION</h4>
<blockquote>
<p>The <i>killpg</i>() function shall send the signal specified by <i>sig</i> to the process group specified by <i>pgrp</i>.</p>
<p>If <i>pgrp</i> is greater than 1, <i>killpg</i>(<i>pgrp</i>,&nbsp;<i>sig</i>) shall be equivalent to
<i>kill</i>(-<i>pgrp</i>,&nbsp;<i>sig</i>). If <i>pgrp</i> is less than or equal to 1, the behavior of <i>killpg</i>() is
undefined.</p>
</blockquote>
<h4><a name="tag_03_324_04"></a>RETURN VALUE</h4>
<blockquote>
<p>Refer to <a href="kill.html"><i>kill</i>()</a> .</p>
</blockquote>
<h4><a name="tag_03_324_05"></a>ERRORS</h4>
<blockquote>
<p>Refer to <a href="kill.html"><i>kill</i>()</a> .</p>
</blockquote>
<hr>
<div class="box"><em>The following sections are informative.</em></div>
<h4><a name="tag_03_324_06"></a>EXAMPLES</h4>
<blockquote>
<p>None.</p>
</blockquote>
<h4><a name="tag_03_324_07"></a>APPLICATION USAGE</h4>
<blockquote>
<p>None.</p>
</blockquote>
<h4><a name="tag_03_324_08"></a>RATIONALE</h4>
<blockquote>
<p>None.</p>
</blockquote>
<h4><a name="tag_03_324_09"></a>FUTURE DIRECTIONS</h4>
<blockquote>
<p>None.</p>
</blockquote>
<h4><a name="tag_03_324_10"></a>SEE ALSO</h4>
<blockquote>
<p><a href="getpgid.html"><i>getpgid</i>()</a> , <a href="getpid.html"><i>getpid</i>()</a> , <a href="kill.html"><i>kill</i>()</a>
, <a href="raise.html"><i>raise</i>()</a> , the Base Definitions volume of IEEE&nbsp;Std&nbsp;1003.1-2001, <a href=
"../basedefs/signal.h.html"><i>&lt;signal.h&gt;</i></a></p>
</blockquote>
<h4><a name="tag_03_324_11"></a>CHANGE HISTORY</h4>
<blockquote>
<p>First released in Issue 4, Version 2.</p>
</blockquote>
<h4><a name="tag_03_324_12"></a>Issue 5</h4>
<blockquote>
<p>Moved from X/OPEN UNIX extension to BASE.</p>
</blockquote>
<div class="box"><em>End of informative text.</em></div>
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